drm/i915/vrr: Add helper for PSR to enable Frame Change event on trans push

Add new helper to enable PSR Frame Change event generation using trans push
mechanism. This helper is to be used by PSR code on PSR enable.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patch.msgid.link/20260127124120.1069026-5-jouni.hogander@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.c b/drivers/gpu/drm/i915/display/intel_vrr.c
index f26989c74268dadb0acb612e17e6147150bf600e..66c68e7f3a496b4b203918f8a9738ae275a2b559 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_vrr.c
+++ b/drivers/gpu/drm/i915/display/intel_vrr.c
@@ -973,6 +973,15 @@ void intel_vrr_transcoder_disable(const struct intel_crtc_state *old_crtc_state)
                intel_vrr_tg_disable(old_crtc_state);
 }
 
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state)
+{
+       struct intel_display *display = to_intel_display(crtc_state);
+       enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
+
+       intel_de_write(display, TRANS_PUSH(display, cpu_transcoder),
+                      trans_vrr_push(crtc_state, false));
+}
+
 bool intel_vrr_is_fixed_rr(const struct intel_crtc_state *crtc_state)
 {
        return crtc_state->vrr.flipline &&

diff --git a/drivers/gpu/drm/i915/display/intel_vrr.h b/drivers/gpu/drm/i915/display/intel_vrr.h
index bedcc8c4bff2f4ac3fc666b8825f7618ca6f0998..4f16ca4af91fcfcaa43e8977d07a8c5dab2fc6f7 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_vrr.h
+++ b/drivers/gpu/drm/i915/display/intel_vrr.h
@@ -33,6 +33,7 @@ void intel_vrr_dcb_increment_flip_count(struct intel_crtc_state *crtc_state,
                                        struct intel_crtc *crtc);
 bool intel_vrr_is_push_sent(const struct intel_crtc_state *crtc_state);
 void intel_vrr_disable(const struct intel_crtc_state *old_crtc_state);
+void intel_vrr_psr_frame_change_enable(const struct intel_crtc_state *crtc_state);
 void intel_vrr_get_config(struct intel_crtc_state *crtc_state);
 int intel_vrr_vmax_vtotal(const struct intel_crtc_state *crtc_state);
 int intel_vrr_vmin_vtotal(const struct intel_crtc_state *crtc_state);